Thank you for responding.
Using ranges preflop then allows us to refine ranges post flop. Again only as a baseline as some players play any two cards
Example
UTG opens for 2.5bb on a 25bb stackwe are in BB and call with xx
The flop is 542R we check and UTG bets.
Using a standard GTO chart preflop range we know that the UTG has no sets or straights on this board and no 2 pair.
We however have all the sets and all the straights and 2 pair hands on this board based on our BB GTO call range.
Therefore the UTG best hand is an over pair only. That means we attack the UTG bet using GTO range as our guide.
Our hand does not matter as long as theUTG is not a calling station they will fold more often even AA if we XR then Jam Turn.
That is why knowing the preflop range is soo important to how we play the rest of the hand.
Even if the UTG checks to protect AA we can lead turn or check raise jam turns on many cards vs a skilled player because of how strong our range is vs UTG on this board.
If you take the time to look at hands you have played for review and have the GTO charts open you will better understand how those charts effect post flop play.
In the above example if we make a set or straight and we know the UTG is a solid player we know that we cannot just jam and get payed. That is based on ranges as well.
We also know a good player may min bet flop check back turn so we know not to over slow play the nuts as we will not get a turn bet. So ranges help us to know how to play our hands post flop as well.
It is hard work to learn to think about range interaction and Villain actions but it is what pays off in game.
Hope this helps
